A corpora



B. A. LINDEMER.

BOLT.

APPLICATION FILED SEPT. I5, |919.

Patented NOV, 2, 1920.

UNITED STATES BERNHARDT A. LINDEMER, or WEST ALLIs, WISCONSIN, Assi MANUFACTURING CORPORATION, or ivIILWAUKEr., wIsCO TION 0F DELAWARE.

PATENT OFFICE.

GNOR To BADGER NSIN, A CORPORA- BOLT.

i To all whom t may concern:

Be it known that I, BERNHARDT A. LINDE- MER, a citizen of the United States, residing at West Allis, in the county of Milwaukee and State of Wisconsin, have invented new and useful Improvements in vBolts, of which 'the following is a speciication.

This invention relates to bolts or attachers.

This bolt is particularly adapted to fasten an automobile bumper bracket to the side bar of the automobile frame, but may be employed for other purposes.

The side bar ordinarily has a web with an upper and lower` inwardly projecting, lateral ilange. It has been proposed` to fasten the bracket to the sidebar by means of a hook bolt, the hook of which hooks upon the inner edge of the lower lateral flange with the nut clamping the bracket to the outside of the web.

rlhe ordinary hook bolt fails to satisfactorily serve the purpose, particularly if the bolt becomes loose, as the shank of the bolt is liable to tilt outwardly, thereby releasing the bolt and the'bracket.

The only way which has been proposed to keep the shank from tilting downwardly is to. have the shank near the hook end engageA rbracket to the side bar.

Any tendency of the bolt to tilt downwardly is resisted by impingement of the end of the hook at one point on the inside of the weby and the nut indirectly at another point on the outside of the web, these points of impingement preferably being widely separated so as to firmly resist tilting.

' The j aw is made in the form of a hook so that it will receive the lower lateral Harige, but does not engage this flange. When the Specification of Letters Patent.

Application filed September 15, 1919. Serial No.

Patented Nov. 2, 1920.

with the bottom of the web and the flange,`

and indirect impingement outside of the web.

An embodiment of this invention is illustrated in the accompanying drawings in which- Figure l illustrates a side elevation of the bolt appli ed to a side bar.

Fig. 2 is a perspective of the bolt and a spacer.

Fig. 3 is a side elevation of the bracket held in place by the bolt.

The bolt comprises a shank 1 having at one end a jaw 2 which is in the form of a hook, the end 3 of which constitutes the jaw. A The other end of the shank is threaded and carries a nut 4l which serves as another jaw for the bolt. Ordinarily a lock washer 5 and a spacer 6 are carried by the shank. The spacer has a downwardly extending of the nut on the plate and a lateral sleeve through which theV shank passes. l

The automobile side bar is illustrated in the form of a channel bar which has a web 8 and a lower lateral flange 9. The bumper bracket l() is arranged upon the outsideiof the side bar, the spacer 6 being placed between the bar and the bracket. The nut l is arranged onthe outside of the bracket 10, the lock washer 5 being placed between the same. When the nut is set the web and the bracket, as well as the spacer and lock nut, are gripped or clamped between the j aw and the nut or other clamping means.

.Of course other clamping means may be employed in place of the nut. VThe spacer may be eliminated, the bumper bracket being placed directly against.V the bar.

When the bumper bracket is clamped on the side bar by the bolt, if for any reason there is any tendency for the bolt to tilt downwardly, immediately the jaw 3 impinges upon the inside oflthel web 8 and the observed that `these points `of impingement are comparatively widely separated. Therefore when this mipingement takes place, the

u gripping or clamping of the bolt is greatly increased and tilting of the bolt is prevented.

Likewise any tendency of the bolt to tilt upwardly is resisted. Such a tendenc to tilt is resisted due to the inipingeinent oi the shank l against the bottom of the web and lange and the indirect impingement ot the web upon the outside of the web. This impingement takes place as soon as there is a tendency of the bolt to tilt upwardly, and increases the gripping or clamping eilect of the bolt thereby preventing? tilting of the bolt.

When the bumper bracket is mounted as shown in Fig. 3 where two bolts are employed for clamping the bracket to the side bar, any weight upon the free end of the `bracket causes the bolt at the other end thereof to tend to tilt upwardly and the other bolt to tilt downwardly. On the other hand if an attempt is made to raise the lree end of the bracket, or a force is applied thereto from beneath, then the tilting tendency oit the bolts is reversed. ln either case, the tendency to tilt is resisted in the manner previously described. llfhese bolts therefore hold the bumper bracket firmly in proper position upon the side bar and prevent any displacement of the bumper bracket.

It will be evident that the same results are obtained when the spacer is eliminated and the bumper bracket placed directly against the side bar.

The Vgripping or wedging e''ect produced by the impingement of the jaw 8 upon the inside ott the web 8 and impingement of the nut l upon the outside of the web may be still further increased by serrating or otherwisevroughening the face of the jaw 3.

It the nut of the bolt should work loose and a tendency to tilt downwardly result, the bumper bracket would still be held in position on the side bar. rlhe holding oi the bracket in place on the side bar under such circumstances isl due to the gripping or clamping eiiect ot the bolt resulting from the impingement of the jaw 3 upon the inside of the web 8 and the impingement oi' the nut 4; upon the outside of the web.

It is obvious that the bolt may be employed for purposes other than for fastening bumper brackets toside bars et automobile frames.

What is claimed is :V

1. A bolt adapted t0 fasten a bumper bracket to an automobile frame side bar, comprising a shank, a jaw at one end thereof and clamping means at the other, the jaw and the clamping means being adapted to grip directly therebetween the bar and the bracket to hold the bracket in place upon the bar, the jaw and the clamping means having points of impingement widely spaced apart to resist tilting.

52,. A. bolt adapted to tasten a bumper bracket to an automobile frame side bar comprising a shank, a jaw at each end thereof, said jaws being adapted to grip directly Y therebetween the bar and the bracket to hold the bracket in place upon the bar and having points of impingement widely spaced apart to resist tilting.

3. A bolt adapted to tasten a bumper bracketV to an automobile frame side bar f comprising a shank, a jaw at one end thereof and an adjustable jaw at the other, said jaws being adapted to grip directly therebetween the bar and the bracket to hold the bracket in place upon the bar, the jaws having points of impingement widely spaced apart to resist tilting.

4.-. A. bolt adapted to tasten a bumper bracket to an automobile frame side bar, comprising a shank, a jaw at one end thereof and a nut at the other, the jaw and the nut being adapted to grip directly therebetween the bar and the bracket to hold the bracketin place upon the bar, the jaw and the nut having points of impingement widely spaced apart to resist tilting.

5. A bolt adapted to Jfasten a bumper bracket to an automobile trame side bar comprising a shank, a jaw at one end thereof and clamping means at the other, a spacer positioned between the bar and the bracket and carried by the shank, the jaw and the clamping means being adapted to grip directly therebetween the spacer bar and bracket to hold the bracket in place upon the bar, the jaw and the clamping means having points ot impingement widely spaced apart to resist tilting.

6. A bolt adapted to Jfasten one member to another comprising a shank engaging one member and a iiXed and an adjustable jaw on the shank for engaging opposite sides of the other member, said jaws having points of impingement widely spaced apart to resist tilting.

7. A bolt adapted to fasten one member to another comprising a shank engaging one member, and a jaw at each end of the shank for engaging' opposite sides of the other member and having points of impingement widely spaced apart to resist tilting.

8. A bolt adapted to fasten a bumper bracket to an automobile frame side bar comprising a shank, a hook at one end thereof and clamping means at the other end, the end of the hook and the clamping means being adapted to grip directly therebetween the bar andthe bracket to hold the bracket in place upon the bar and having points of impingement widely spaced apart to resist tilting.

9. A bolt adapted to fasten a bumper bracket to an automobile frame side bar,

said bar being provided with :t web and a grip directly therebetween the web of the lower lateral flange, comprising a shank, a, bar and the bracket to hold the bracket in hook at one end thereof adapted to loop place on the bar.

over the flange with the end of the hook In witness whereof, I have hereunto sub- 5 engaging the web, clamping means at the scribed my name.

other end of the shank, the end of the hook and the clamping means being adapted to BERNHARDT A. LINDEMER. 

